问题报错日志如下。

2022-10-28 13:04:31.761  WARN 1132 --- [           main] ConfigServletWebServerApplicationContext [559] : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'appRepositoryServiceBean' defined in class path resource [org/flowable/spring/boot/app/AppEngineServicesAutoConfiguration.class]: Unsatisfied dependency expressed through method 'appRepositoryServiceBean' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flowableAppEngine': FactoryBean threw exception on object creation; nested exception is org.flowable.common.engine.api.FlowableException: Error initialising eventregistry data model
2022-10-28 13:04:31.763  INFO 1132 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  [218] : Shutting down ExecutorService 'applicationTaskExecutor'
2022-10-28 13:04:31.765  INFO 1132 --- [           main] com.alibaba.druid.pool.DruidDataSource   [2071] : {dataSource-1} closing ...
2022-10-28 13:04:31.769  INFO 1132 --- [           main] com.alibaba.druid.pool.DruidDataSource   [2144] : {dataSource-1} closed
2022-10-28 13:04:31.771  INFO 1132 --- [           main] o.apache.catalina.core.StandardService   [173] : Stopping service [Tomcat]
2022-10-28 13:04:31.778  INFO 1132 --- [           main] ConditionEvaluationReportLoggingListener [136] : 
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-10-28 13:04:31.787 ERROR 1132 --- [           main] o.s.boot.SpringApplication               [837] : Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'appRepositoryServiceBean' defined in class path resource [org/flowable/spring/boot/app/AppEngineServicesAutoConfiguration.class]: Unsatisfied dependency expressed through method 'appRepositoryServiceBean' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flowableAppEngine': FactoryBean threw exception on object creation; nested exception is org.flowable.common.engine.api.FlowableException: Error initialising eventregistry data model
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:799)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:540)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
	at com.fir.video.Application.main(Application.java:15)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flowableAppEngine': FactoryBean threw exception on object creation; nested exception is org.flowable.common.engine.api.FlowableException: Error initialising eventregistry data model
	at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:176)
	at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1828)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1265)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.addCandidateEntry(DefaultListableBeanFactory.java:1532)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1489)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1270)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:886)
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:790)
	... 20 common frames omitted
Caused by: org.flowable.common.engine.api.FlowableException: Error initialising eventregistry data model
	at org.flowable.common.engine.impl.db.LiquibaseBasedSchemaManager.initSchema(LiquibaseBasedSchemaManager.java:88)
	at org.flowable.eventregistry.impl.db.EventDbSchemaManager.initSchema(EventDbSchemaManager.java:36)
	at org.flowable.eventregistry.impl.cmd.SchemaOperationsEventRegistryEngineBuild.execute(SchemaOperationsEventRegistryEngineBuild.java:29)
	at org.flowable.eventregistry.impl.cmd.SchemaOperationsEventRegistryEngineBuild.execute(SchemaOperationsEventRegistryEngineBuild.java:24)
	at org.flowable.common.engine.impl.interceptor.DefaultCommandInvoker.execute(DefaultCommandInvoker.java:22)
	at org.flowable.common.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53)
	at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:105)
	at org.flowable.common.spring.SpringTransactionInterceptor.lambda$execute$0(SpringTransactionInterceptor.java:57)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
	at org.flowable.common.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:57)
	at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30)
	at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56)
	at org.flowable.eventregistry.impl.EventRegistryEngineImpl.<init>(EventRegistryEngineImpl.java:47)
	at org.flowable.eventregistry.impl.EventRegistryEngineConfiguration.buildEventRegistryEngine(EventRegistryEngineConfiguration.java:195)
	at org.flowable.eventregistry.spring.SpringEventRegistryEngineConfiguration.buildEventRegistryEngine(SpringEventRegistryEngineConfiguration.java:73)
	at org.flowable.eventregistry.spring.configurator.SpringEventRegistryConfigurator.initEventRegistryEngine(SpringEventRegistryConfigurator.java:57)
	at org.flowable.eventregistry.spring.configurator.SpringEventRegistryConfigurator.configure(SpringEventRegistryConfigurator.java:47)
	at org.flowable.common.engine.impl.AbstractEngineConfiguration.configuratorsAfterInit(AbstractEngineConfiguration.java:1109)
	at org.flowable.app.engine.AppEngineConfiguration.init(AppEngineConfiguration.java:237)
	at org.flowable.app.engine.AppEngineConfiguration.buildAppEngine(AppEngineConfiguration.java:193)
	at org.flowable.app.spring.SpringAppEngineConfiguration.buildAppEngine(SpringAppEngineConfiguration.java:66)
	at org.flowable.app.spring.AppEngineFactoryBean.getObject(AppEngineFactoryBean.java:58)
	at org.flowable.app.spring.AppEngineFactoryBean.getObject(AppEngineFactoryBean.java:31)
	at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:169)
	... 32 common frames omitted
Caused by: org.flowable.common.engine.api.FlowableException: Error updating eventregistry engine tables
	at org.flowable.common.engine.impl.db.LiquibaseBasedSchemaManager.schemaUpdate(LiquibaseBasedSchemaManager.java:129)
	at org.flowable.eventregistry.impl.db.EventDbSchemaManager.schemaUpdate(EventDbSchemaManager.java:63)
	at liquibase.Scope.child(Scope.java:101)
	at liquibase.Scope.child(Scope.java:82)
	at org.flowable.common.engine.impl.db.LiquibaseBasedSchemaManager.runForLiquibase(LiquibaseBasedSchemaManager.java:93)
	at org.flowable.common.engine.impl.db.LiquibaseBasedSchemaManager.initSchema(LiquibaseBasedSchemaManager.java:81)
	... 55 common frames omitted
Caused by: java.lang.ClassCastException: java.time.LocalDateTime cannot be cast to java.lang.String
	at liquibase.changelog.StandardChangeLogHistoryService.getRanChangeSets(StandardChangeLogHistoryService.java:328)
	at liquibase.changelog.AbstractChangeLogHistoryService.upgradeChecksums(AbstractChangeLogHistoryService.java:66)
	at liquibase.changelog.StandardChangeLogHistoryService.upgradeChecksums(StandardChangeLogHistoryService.java:297)
	at liquibase.Liquibase.checkLiquibaseTables(Liquibase.java:1228)
	at liquibase.Liquibase.update(Liquibase.java:193)
	at liquibase.Liquibase.update(Liquibase.java:179)
	at liquibase.Liquibase.update(Liquibase.java:175)
	at liquibase.Liquibase.update(Liquibase.java:168)
	at org.flowable.common.engine.impl.db.LiquibaseBasedSchemaManager.schemaUpdate(LiquibaseBasedSchemaManager.java:127)
	... 60 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:55977', transport: 'socket'
在日志中有一段错误描述
 
java.lang.ClassCastException: java.time.LocalDateTime cannot be cast to java.lang.String
引发了一个 ClassCastException 异常，该异常表明在 Liquibase 操作中将 java.time.LocalDateTime 类型的对象转换为 String 类型时发生了问题。
 
在 JDBC 驱动的不同版本中，可能会对数据库的某些类型或 JDBC 操作产生影响，导致与 Flowable 或其他数据库操作库的集成问题。
 
可参照下贴说明
 
flowable报错java.time.LocalDateTime cannot be cast to java.lang.String_dateexecuted-CSDN博客
                    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'appRepositoryServiceBean' defined in class path resource [org/flowable/spring/boot/app/AppEngineServicesAutoConfiguration.class]: Unsatisfied dependency expres
开启JTA分布式事务后。。。flowable启动各种报错
com.atomikos.jdbc.AtomikosSQLException: Cannot call method ‘commit’ while a global transaction is running
org.springframework.beans.factory.UnsatisfiedDependencyException: Er
				
Spring Boot提倡约定大于配置。要开始工作，只需在项目中添加flowable-spring-boot-starter或flowable-spring-boot-starter-rest依赖。如果不需要引入所有的引擎，可以查看其它的Flowable starter。 如使用Maven：
<dependency>
    <groupId>org.flowable</groupId>
    <artifactId>flowable-spring-bo
 .  ____     _      __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | ||...
				
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后来经过排查发现是mysql的问题解决方法：找到数据库所表名以 databasechangeloglock 为后缀的表，并改成如下图格式问
一、AppEngineFactoryBean 初始化
1、在 AppEngineServicesAutoConfiguration 配置类中创建了Bean AppEngineFactoryBean
@Bean(name="flowableAppEngine")
    public AppEngineFactoryBean appEngine(SpringAppEngineConfiguration configur
					
# 解决 Error creating bean with name ‘dataSource‘ defined in class path resource [applicationContext
				
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场景：在搭建springcloud项目时，创建eureka服务提供方时，启动时项目报错：
org.spri
在网上找一下没找到 ,之前项目对比发现忘记在WebApplication中少加了个注解
加上之后问题解决,查了下这个注解(横线以下是对@MapperSecan的介绍):
之前是，直接在Mapper类上面添加注解@Mapper，这种方式要求每一个mapper类都需要添加此注解，麻烦。
通过使用@MapperScan可以指定...
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